Common problems and how to troubleshoot them for tree trenches and tree boxes Common problems and how to troubleshoot them for tree trenches and tree boxes

Common problems and how to troubleshoot them for tree trenches and tree boxes
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Symptom	Possible causes	Solution
Standing water within the infiltration area for more than 48 hours	This might be because a pretreatment is no longer working, or there are excessive sediment loads due to erosion or high sediment loads from the contributing area.	If applicable, clean the pretreatment area with more frequency. Scrape, clean or vacuum the infiltration area. Aerate the infiltration area Stabilize erosion in the drainage area. Contact manufacturer.
Rainwater does not appear to flow to the infiltration/filtration area	Leaves, sediment, trash, or plant debris may be blocking the flow path to the inlet	Remove these materials on a regular basis
Tree is not growing or shows signs of poor health during inspections	Species selection is inappropriate for the site Over or underwatering Disease or other problems	Consult with an arborist. Check that plants are suited to the local conditions.
Erosion or scouring around the inlet	Flow is obstructed by debris or improper grading	Correct for drainage and flow path issues to make sure flows are evenly distributed. Make sure the flow paths are unobstructed